.banner-container{
    height: 220px;
    width: 100%;
    background-image: url('../img/banner.png');
    background-size: 100% 100%;
    background-position: center;
    background-repeat: no-repeat;
    text-align: center;
    
}
.banner-container .wrap{
    width: 1152px;
    margin: 0 auto;
    height: 100%;
    padding-top: 48px;
    box-sizing: border-box;
    position: relative;
}

.logo-class{
    width: 270px;
    height: 36px;
    background-image: url('../img/logo-class-recommended.png');
    background-size: 100% 100%;
    background-position: center;
    background-repeat: no-repeat;
    position: absolute;
    left: 0;
    top: 16px;
}
.banner-container .wrap h2{
    font-size: 60px;
    font-weight: 700;
    color: #fff;
    letter-spacing: 4.69px;
    text-align: center;
    line-height: 60px;
    text-shadow: 0 8px 16px rgba(28,31,33,.3);
    margin-bottom: 18px;
}
.banner-container .wrap .desc{
    display: inline-block;
    
}
.banner-container .wrap .desc .text{
        font-size: 16px;
        color: #fff;
        text-align: center;
        line-height: 24px;
}
.banner-container .wrap .desc .line{
        font-size: 16px;
    color: #fff;
    margin: 0 30px;
    line-height: 44px;
}
.l{
        float: left;
}
.class-container .wrap{
    width: 1092px;
    height: 100%;
    margin: 0 auto;
}
.class-container .card:nth-child(3n+1){
    margin-right: 0;

}
